Reliability and Latency Analysis of UAV-Assisted Base Station with Differentiated 5G Services

As the fifth generation (5G) of mobile communication systems are becoming a commercial reality, this paper attempts to investigate the reliability and propagation latency performance of UAV-assisted cellular systems that caters to a scalable, flexible and on-demand solution for differentiated 5G services. The reliability performance of the considered system is evaluated in terms of block error rates (BLER) along with the propagation latency for three classes of services: Ultra Reliable Low Latency Communications (URLLC), enhanced Mobile Broadband (eMBB), and massive Machine Type Communications (mMTC). Considering the impact of fading and shadowing, the closed-form approximate expressions for BLER and propagation latency are evaluated over Rician shadowed fading with various shadowing scenarios. The numerical results reveal important insights related to the achievable reliability performance for three different services under given fading and shadowing severity. Specifically, The tightness of the ap-proximation presented is validated through the Monte-Carlo simulations.